Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4BEN callsign genealogy
Currently held by OBERHOLTZER, ANITA J
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WB4BEN's current licensee, walking backwards.
- Woo, Benjamin HCAgranted 2015-08-14cancelled 2015-10-23
Successor callsigns
Callsigns held now by people who previously held WB4BEN.
- Woo, Benjamin HCAgranted 2016-05-24
All historical holders
Every license row we've seen with the callsign WB4BEN, oldest first.
- OBERHOLTZER, ANITA J DC1996-01-19 → cancelled 2008-01-23
- Woo, Benjamin H CA2015-10-23 → cancelled 2016-05-24